I'm a newbie here and with Linux and Mint.
I set up an old E-machines with a P4 as a Cruncher with WCG/ BOINC. Some friends and online Crunchers recommended Ubuntu. I asked around and found another P4 cruncher using Mint Lisa. He's had no problems, so I went for it!
Aside from a problem with my wired connection, http://forums.linuxmint.com/viewtopic.php?f=150&t=102112, I like it.
Here's hoping I can get that fixed and enjoy it even more!